论文部分内容阅读
铁路高锰辙叉螺栓孔断裂分析
【出 处】
:
机械工程学报
【发表日期】
:
1992年2期
其他文献
通过系统地研究以合金元素锰、辅加微量合金元素,取代贵重金属镍、钼、铜,采用不同于等温淬火的冷却方式,获得以针状组织(贝氏体+马氏体)为主,有一定量奥氏体的新型耐磨球铁。冲
Cyclin A2 is an essential regulator of the cell division cycle through the activation of kinases that participate to the regulation of S phase as well as the mi
Fifteen novel 2-(3-oxobenzo[d]isothiazol-2(3H)-yl)ethyl benzoates were synthesi- zed by the condensation of 2-(2-hydroxyethyl)benzo[d]isothiazol-3(2H)-one with
Crystal Structure and High Contrast Color-/fluorescent-switching Properties of 1-[2-Methyl-5-(4-chlo
A new photochromic diarylethene,[1-(2-methyl-5-(4-chlorophenyl)-3-thienyl-2-(2-methoxylphenyl)]perfluorocyclopentene(1o,C23H15 Cl F6OS) was synthesized and its
The chelate complex of Cu2+ with 2-hydroxy-(4-methylthio)butanoate(MHA-H, the anion derived from the so-called methionine hydroxy-analogue, largely used in anim
本文介绍了一种用于曲面形貌测量的计算机辅助方法,其实质在于以平面作为测量基准,采用数据处理方法(最小二乘拟合法和数字滤波法)去除曲面形状部分的影响。试验表明,这是获得图
The effect of the distribution of organic cations CH_3NH_3~+(MA~+) on the stability,electronic structures and optical properties of CH3NH3 Pb I3 perovskite have
结合装载机分段作业特点,提出了半载机半轴变均值,变幅值标准载荷谱的制取原则与方法,解决了均值,幅值“归一化”问题,最终建立装载机半轴标准载荷谱。